Probabilistic modeling and sizing of embedded flaws in ultrasonic nondestructive inspections for fatigue damage prognostics and structural integrity assessment

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United States of America Patent

PATENT NO 9792555
SERIAL NO

14106919

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A method for probabilistic fatigue life prediction using nondestructive testing data considering uncertainties from nondestructive examination (NDE) data and fatigue model parameters. The method utilizes uncertainty quantification models for detection, sizing, fatigue model parameters and inputs. A probability of detection model is developed based on a log-linear model coupling an actual flaw size with a nondestructive examination (NDE) reported size. A distribution of the actual flaw size is derived for both NDE data without flaw indications and NDE data with flaw indications by using probabilistic modeling and Bayes theorem. A turbine rotor example with real world NDE inspection data is presented to demonstrate the overall methodology.

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Patent Owner(s)

  • SIEMENS AKTIENGESELLSCHAFT;SIEMENS ENERGY, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abbasi, Waheed A Murrysville, US 15 150
Guan, Xuefei Princeton, US 7 24
Guo, Yan Orlando, US 74 1159
Kadau, Kai Clover, US 18 57
Lee, Chin-Sheng Winter Springs, US 11 31
Lewis, Ashley L Oviedo, US 3 14
Radke, Steve H Orlando, US 3 14
Rasselkorde, El Mahjoub Monroeville, US 9 49
Zhang, Jingdan Bellevue, US 27 274
Zhou, Shaohua Kevin Plainsboro, US 129 2143

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